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<?php
  if (isset($_POST['submit'])) {
    $servername = "localhost";
    $username = "root";
    $password = "";
    $database = "DATABASE";

    // Create connection
    $conn = new mysqli($servername, $username, $password, $database);

    // Check connection
    if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
    }

    // create a variable
    $namen=$_POST['naam'];
    $plaatsen=$_POST['plaats'];
    $landen=$_POST['land'];
    $provincie=$_POST['provincie'];

    //Execute the query
    mysqli_query($conn, "INSERT INTO employees1(naam,plaats,land,provincie) VALUES('$namen','$plaatsen','$landen','$provincie')");
  }

?>

<!DOCTYPE html>
<html>
  <head>
    <link rel="stylesheet" type="text/css" href="main.css">
    <title>PHP Toets</title>
  </head>
  <body>
    <div class="import_intel">
    </div>
    <form method="POST" action="">
      <div class="invulform">
        <h2>Vul hier de gegevens in die naar de database moeten</h2>
        <input type="text" name="naam" class="input_name" placeholder="Naam"><br>
        <input type="text" name="plaats" class="input_plaats" placeholder="Plaats"><br>
        <input type="text" name="land" class="input_land" placeholder="Land"><br>
        <input type="text" name="provience" class="input_provience" placeholder="Provience"><br>
        <input type="button" name="submit" class="submit_button" value="Verstuur">
      </div>
    </form>
    <div class="overzichtform">
      <h3>Data</h3>
    </div>
  </body>
</html>